There is not tree _____ bears some fruit
A. which
B. that
C. what
D. but
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This is the reason ______ I am not in favor of revising the plan.
A. which
B. because
C. why
D. since
成人气管内插管导管尖端距门齿的最佳距离是( )
A. 22±2 cm
B. 24±2 cm
C. 20±2 cm
D. 22±4 cm
E. 28±4 cm
气管导管插入气管后,下列套囊注气法正确的是( )
A. 给气管导管套囊充气8ml;
B. 给气管导管套囊充气2ml;
C. 给气管导管套囊充气,触摸注气端套囊弹性似鼻尖;
D. 给气管导管套囊充气,触摸注气端套囊弹性似额头;
E. 给气管导管套囊充气,触摸注气端套囊弹性似口唇;
气管插管暴露声门时,成人用弯形喉镜叶片前段放置的最佳位置是( )
A. 舌体;
B. 会厌谷;
C. 声门上;
D. 舌根;
E. 以上均不正确;
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